Oil-feed for carbureting apparatus.



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Patented A. GRANDJEAN APPLICATION FILED JUNE 4, 1907.

OIL FEED FOR OARBURETING APPARATUS.

Q/Vi in ease:

A. ermmsmm. OIL FEED FOB GARBURETII-IG APPARATUS.

APPLIOATIOH IILED JUKE 4, 1907.

Patented Feb. 16; 1909.

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w an. an. ism-3 GRANDJEATJ, SAN DIEGO, CALIFORN omssrsn so. erases.

Specification of Letters Patent.

Patented Feb. 16,

Application filed June a, 1907. Serial No. 8? 7,241}.

- charged through a comparatively, shallow to he comparatively easy and bod y of liquid hydro-carbon in the generating chamber of the apparatus.

The invention has for one of its objects to improve and simplify the construction and operation of apparatus of this character so as inexpensive to manufacture, thoroughly reliable and filcient in use, and capable of automatically maintaining a supply ol'liquid hydro-carbon in the generator.

A further object of the invention is the 1 provision of a generator in which a comparatively shallow depth of liquid hydro-carbon is maintained and which contains an air discharging devicepartially submerged in the liquid hydro-carbon for delivering the air under pressure downwardly to the same for producing a thoroughly carbureted mixture suitable for illuminating, heating or other purposes.

A still further object is the provision of an automatic feeding system whereby the level of the hydro-carbon can he maintained above predetermined minimum.

With these objects in view and others, as will appear as the description proceeds, the invention comprises the various novel features of construction and arrangement of parts which will be more iullydcscribed hereinafter and set forth with particularity in the claims appended hereto.

in the accompanying drawings, which invention, Figure 1 illustrate certain of the embodiments of the I is a central vertical sectlon of .a generating chamber and "gasometer with associated parts in elevation. Fi 2'is aside elevation of the generator and fuel supply tank. Fig. 3 so nice shown in El 1.

is a central vertical section of the generator provided with a modified form of air dischargin device.- Fig. 4 is a bottom plan view of the air discharging dea Fig,- 5 represents detail views'ci" the sight glass in the feed charm vicing pipe 17 that contains a controlling short piece of pi e 19 about an inch her of the generator. Fig. 6 is an enlarged sectional View of the air and gas valve oi the gasoineter.

Similar reference characters are employed to designate corresponding parts throughout the several views. f,

The carbureting apparatus shown in the present case is intended primarily for use in connection with the air supplying apparatus shown in applicants co-pending application, Serial No. 289,465, filed Nov. 28, 1905, although it is to be understood that it is not necessarily limited to this type of apparatus.

Referring to the drawing, A designates a gas generator; B, the gasoineter; source of ruel supply.

drical body 1 having a conical top 2 anda flat bottom 3 provided with a drain opening 4, there being a funnel-shaped drainage chamber 5 into which sediment can collect and be drawn oil through a drip cook e. The generator is preferably supported on legs? and arranged in superimposed relation to the generator is the fuel tank or reservoir (3. 'llus tank rests on a bracket 8 that is secured in a T coupling 9 forming a part of the gas conducting pipe 10 that communicates with the generator at the top through the short connecting nipe 11. At one side of the gen erator adjacent the bottom thereof is a feed chamber 12 that communicates with the generator chamber through the inlet opening or port 13. The fuel tank C, which is provided with a sight glass 14 is connected with the feed chamber 12 by a vertically extending pipe 15 that connects with the tank "3 adjacent its bottom, there being included in the pipe a cut-oll or controlling valve l6. The lower end of the ipe 15 extends toa point slightly short oi the bottom of the chamber 12. l'dso extending between the feed chamber and fuel tank isan air ual valve 18 and connects With the .air top of the tank which latter sealed so as not to be subjected tdatmcspheric pressure. in practice, the air pipe 17 is usually about one-eighth of an. inch in diameter and at the bottom thereof is a space or eter, the some aving its lower end. almost ona level Will-ll the bottom of the port 13 and provided with a V-shaped notch 29 and C, the

is, of course,

in diam The generator comprises a llOllOW cylin of which air can be adni-igted to the pipe 17 when the level of theifuel falls to a certain minimum, it being understood that under normal conditions the lower end of the large 5 pipe 19 is submerged. The normal level of /the fuel in the feed chamber and generator is above the bottom of the pipe 19 and.the bottom of the air discharging device, and when the level falls to a oint at which; air can enter the notch 20, t e pressure in the fuel tank will become the same as that in the generator and thereby permit the liquiduel to flow through the pipe by gravity haul the pressure in the generator reaches such a;: point as to interrupt the flow. In other words, upon the fiow of. fuel to the chamber 12, the liquid will rise and cover the notch 20 so that thecontinuance of the flow of fuel will tend to create a vacuum in the fuel tank, it being understood that the lower end of the pipe 19 will be. sealed by the rise in level of fuel in the chamber12. I

The'enlarging of the lower end of the air pipe is an important feature of the fuel supply means since it prevents the fuel from working upwardly and through the air pipe under certain conditions. It has been 'ftiujnd in practice that when the pipe 17 is of :sinall diameter throughout its length and the valve 16 of the fuel sup ly pipe 15 is closed; as for instance, over nig t, the fuel will work upwardly and back into the tank. But'by' enlargin the lower end .of the-air pipe, as shown, this objection is effectually overcome. 85 e In ordeF to ascertain the level at any time within the feed chamber 12, the latter is provided with a sight glass 21 which, as shown in Fig. 5, comprises a casting 22 hav ing a threaded nipple23 screwing into the wall of the chamber 12 and on which is threaded a ring 24 for holding a disk of glass 25 in place. There may also-be provided a sight gage such as indicated at 26 in Fig. 2 that communicates at its lower end with. the drain connection 27 and at its u per end with the generator at a point sligh y above the maximum level of fuel therein.

The air to be enriched is supplied under a suitable pressure through a pipe 28 that extends upwardly along the gas connecting pipe 10 and passes horizontally into the conical top 2 of the generating chamber at 29 where it connects with a central vertical pipe 30. n the bottom of the pipe 30 is an air discharging device 31 which, as shown in Figs. 1 ant 4, may be in the form of a hollow cone having a perforated bottom 32 by means of which the air is discharged into the .fuel in the form of minute jets, the bottom of the device 31 being submerged in the ,iliquid luo'l. (Jn the gar-orator are horizonc-ts 33 o'ii'whieh I rlisclrlirg- My": lf Sallie"lfili hl liliglug a era ice cross coupling 34 on-the lower end of the pipe 30, which coupling is provided with radially extending and downwardly curved tubular arms 35 whose-lower ends extend crater. The air, which may be delivers to Faith the pipe 28, is forced throng the liquid el and thereby becomes thoroughly carbureted and collects in the space abovethe fuel from which it will be drawn ofi throu h the pipe 10 for any desired. urpose.

air supply pipe28 is a chec valve 35, preferably arranged in the horizontal portion "i -{thereof and adapted to open toward the generator and close the source of air supply.

ome't e' 'r B that is connected therewith by the tom of the gasometer and extends upwardly therein to a suitable point. comprises, as usual,,a stationary watercoueal movement, an inverted bell 37 that. is sealed by the body of water in the tank and (pipe 38 which is top and havln V The bottom 0 the casing is internally threaded for screwing on the as conducting pipe and above the internal t read 434s. an

seat for receiving the valve 45. The valve wardly through the top of the casing and is hingedly connected with a lever 47 which 1s fulcrumed at 48 on a lug 49 formed on the valve casing. The lever is actuated bya rod 50 that passes upwardly through the enter free or head 51 at its lower end and 'anhore at its upper end on the top of the bell. By

lever 47 when the bell is raised to its u per limit or is fullycharged and thereby c oses the .valve 40.

When the apparatus is used in connection with a pump, such as is shown in the co.- pending application above referred to, it

pipe 28, and for this purpose, the said ipe aspproyided with a T boupling 52 at its. Ot'f tom with which is connected an inclined drain pipe 53, as shown in Fig. 1, which pipe has a drain cock 54 at itfifi't'er end.

below the level of the liquid fuel in the enthe generator by means of a pum connected gas conducting pipe 10 which enters'the bot-.

taimng tank 36 in which is mounted forfvertifunnel 39 at its in F ig. 6,. comprises a casing 41 closed atits side outlet openings 42..

internal annu l'ar shoulder 44 forming a valve end of the lever and isprovided with a sto this arrangement, the stop 51 engages the is necessary at times to drain ofl' water of condensation that collects in the air supply- Int e Associated with the generator is the gas- 1 The gasometer serves as a reservoir for the gas or carbureted I 'Ihe carbureted air is drawn off from is attached to a stem 46 that passes upthe combinatioirot' a gastight casing erases Having thus described the invention, what Lclaim is 1. In an apparatus oithe class described,

provided with an opening in its side ad acent its bottom, an air supply device mounted in the casing having orifices located approximately at the same level asthe opening, an airtight chamber at one side and con1n1unieating with the casing through said opening, a fuel reservoir above the chamber, a pipe leading therefrom into the casing and termihating substantially on a level with the opening for feeding fuel by gravity to the chamber, an air-equalizing pipe communieating with the chamber and reservoir, and a tube disposed within the chamber and hay ing its upper end connected with the airequalizing pipe and having its lower end normally immersed in the liquid fuel in the chamber and also on a level with the opening.

2. In an apparatus of the class described,

the combination of a gastight casing, a chamber supported thereon a wallseiaratproing the chamber from the casing an vided with an aperture forming a means of restricted communication. between them and located at a point below the top of the chamber, a fuel-containing reservoir, a pipe leading from the reservoir into the chamber and terminating ate point below the top of the said opening, an air-e ualizing pipe communicating with the top 0% the reservoir and with the chamber, and a piece of tube of larger diameter than the equalizing pipe and connected with the latter and having its lower end terminating adjacent the said opening.

in testimony whereof, I my in presence of two witnesses.

W. D. FRENCH, O. K, Henson.

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